Shingle-machine



(No Model.)

J. R. M. CRAWFORD.

SHINGLE MAUHINE.

Patented July 3, 1883.

WITNESSES: V if INVENTOR:

ATTORNEYS.

, UNITED STATES PATENT O FICE.

JOHN R. M. ORAWFOBI OF BOONEVILLE, MISSISSIPPI.

SVHINGLE-MACHINEM SPECIFICATION forming part of Letters Patent No. 280,354, dated July 3, 1883.

Application filed November 23, 1882. (No model.)

T on whom it may concern: a

Be it known thatI, J OHN R. M. CRAWFORD, of Booneville, in the county of Prentiss and State of Mississippi, have invented a new and Improved Shingle-Machine, of which the following is a full, clear, and exact description.

My improvements relate to machines for making shingles; and the invention consists in certain'novel features of construction and combinations of mechanism, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a sectional side elevation of my I improved machine. Fig. 2 is a transverse secb. At the other end of the frame is a receptacle formed by side pieces, 0 a, one end being closed by a pivoted gate, d, (shown separately in Fig. 5,) and the other end fitted with a bent spring-plate, e, that acts to hold the bolt of wood. In the sides 0 c are longitudinal grooves f f, placed one above another, and these grooves receive the edges of oblong frames 9 h so that the groove f at each side serves asa guideway for the upper frame, 9, and grooves f for the lower frame, 11. The grooves ff are not parallel, but separate gradually from one end to the other, the inclination according with the bevel that is given to the shingles.

The lower frame, h, as shown most clearly in Fig.3, is attached upon a cross-head, 2', that is connected by a rod, is, to crank-wheel b, and the upper frame, 9, is connected to frame h by side spring-plates, Z Z, which cause the frames to move together and allow them to draw apart when moving forward in cutting.

tance of this plate below the knife on being the thickness of the shingles.

For holding the bolt, I provide a slotted lever, p, (see Fig. 4,) which is pivoted on one of the sides 0, and provided with an arm or gage plate, 12, bent to pass around one end of the bolt, and, in connection with the lever, use a dog, q, Fig. 6, which is to be driven into the bolt through the slot in the lever to hold the bolt at a proper angle for retaining the grain in line withthe movement of knife m. With irregularly-grained timber, which is likely to rise, the dog q (shown in Fig. 4) may be used,

which is formed to catch beneath teeth in the lever p. The lever is intended to remain as placed, to hold the bolt against the spring 6. r is a slide-block placed in the path of knife on and connected to spring 6, so as to carry the spring back and release the bolt when the block 1" is moved back by the knife. 8 is a spring for pressing the bolt against lever 12.

The operation is as follows The bolt of timber, being put in place and adjusted by lever p, rests on plate 0. The frames 9 h then moving forward, the lower knife, m, moving parallel with the grain of the wood, takes off the shingle, and the upper knife, 41, immediately following, bevels the under side of the bolt, The plate 0 moves with the knives and clears the shingle, so that it may drop, the bolt being held by lever 11 and springs e s. The frames then return, and knife n striking block r, the bolt is released and allowed todrop upon plate 0, ready for the next forward movement of the knives. When the bolt is worked down too thin for further splitting, gate dis to be raised to allow of the piece being pushed out by the knives, and a newbolt then put in place.

The crank-pin on wheel I) is to be moved 011 the wheel to and from the center, so as to vary the stroke according to the length of timber.

For making laths or staves, lever 19 is to be set back and spring 6 shifted on its support, so as to give room for the longer bolts. The upper sash, g, is to be removed and the lower one only used.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In shingle-machines, the combination of sliding frames 9 71, carrying knives, and receptacle for the bolt, formedwith diverging grooves ing grooves ff, whereby the bolt may be cut up into shingles, as described.

4. The combination, with the knife-frames g h and cross-head i, of the plate 0, arranged below frame It and knife m and parallel to frame 9, whereby the bolt will be received when it drops, as described.

5. The slotted lever p, pivoted to one side of, the bolt-receptacle, provided With gage- 20 plate 19, bent to pass round one end of the bolt, and having a dog, (1 or q, in combination with the springs e 3, whereby the bolt may be held, as described.

6. Thereciprocating knife 12, combined with 25 the slide-block r and spring 6, said block being arranged in the path of the knife, and connected with the spring, to release the bolt at the time and in the manner described.

JOHN R. CRAWFORD.

Witnesses;

P. W. NASH, J. W. SMITH, 

